JPH1021896A - Secondary battery system, secondary battery, system using secondary battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and lightweight secondary battery system. SOLUTION: A secondary battery system is equipped with unit cells 4 having positive electrode terminals and negative electrode terminals, and a board 2 on the surface of which respective circuit patterns 3, in which respective contacts to be connected to respective terminals and respective wirings wired from the respective contacts are wired and the adjoining respective wirings are mutually connected in plural sections dividing formed into a predetermined dimension matching the dimension and the shape of the unit cell 4, are formed. On the respective circuit patterns 3 plural unit cells 4 are provided side by side so that respective terminals and respective contacts abut mutually to form a battery set, and the same is incorporated into the housing 1 of a system using a secondary battery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a secondary battery, a secondary battery system, and a system using a secondary battery.
The present invention relates to a structure of a secondary battery system and a housing of a secondary battery use system.

[0002]

2. Description of the Related Art In recent years, secondary batteries have become one of the essential components required as a power source for personal computers and mobile phones, or as power sources for electric vehicles and power storage. (Including those called pen computers) and personal digital assistants (Personal Digit
al Assistant or Personal Intelligent Communi
In mobile communications (mobile computing) such as cators or handheld communicators, miniaturization and weight reduction are particularly required. However, it is difficult to make the system compact because the power consumed by the backlight and drawing control of the liquid crystal display panel is high and the capacity of the secondary battery is still insufficient at present.

[0003] Further, as global environmental problems increase, electric vehicles that do not emit exhaust gas or noise are attracting attention.
However, since the volume occupied by the battery with respect to the vehicle body is extremely large, and the total weight of the battery is extremely heavy, there are disadvantages such as a small space inside the vehicle, poor stability of the vehicle body, and poor acceleration. These are also caused by the low energy density of the secondary battery.

[0004] In order to reduce the size and weight of a system using a secondary battery, it is necessary to increase the energy density of the secondary battery to about 5 to 10 times the current level. This is not currently possible. Therefore, in order to reduce the size and weight of the system using secondary batteries with the current energy density,
There is a need for a secondary battery shape and circuit design that effectively utilizes dead space in the system. As a conventional technique relating to effective use of dead space, for example, Japanese Patent Application Laid-Open No. 2-111204 discloses a four-wheel drive electric vehicle using a flexible sheet-shaped lithium secondary battery.

[0005]

If a flexible sheet-shaped lithium secondary battery is used, it can be easily mounted on a wall surface or an empty space of an automobile body, so that a sufficient boarding space and a cargo space can be secured. Lighter weight is also possible. In a system using a secondary battery such as a portable computer or a portable information terminal, reduction in size and weight can be expected. However, since a flexible battery generally uses a solid electrolyte, it has a low energy density and cannot be charged and discharged with a large current. In addition, since an alkali metal having high reaction activity participates in the reaction in an atomic or ionic state, it is inferior in impact resistance and destruction resistance and has a problem in safety. Furthermore, since the energy density of the unit cell is small, when the system is large like an electric vehicle, the number of series-parallel becomes enormous, which is complicated in circuit design.

As described above, few effective methods have been found for reducing the size and weight of a system using a secondary battery. Therefore, an object of the present invention is to provide a secondary battery, a secondary battery system, and a secondary battery use system that realize compactness and light weight.

[0007]

A secondary battery system that achieves the above object includes a secondary battery having a positive electrode terminal and a negative electrode terminal, and a plurality of divided secondary batteries having predetermined dimensions in accordance with the dimensions and shape of the secondary battery. In the section, a serial contact for serial connection to the positive electrode terminal and the negative electrode terminal, and a serial wiring provided from the serial contact are provided, and the adjacent serial wires are connected to each other. A substrate on which a circuit pattern is formed on the surface, and a plurality of the secondary batteries are juxtaposed by abutting the terminals and the contacts on the circuit patterns on the substrate to form a series power supply. It constitutes an assembled battery.

In addition, a secondary battery having a positive electrode terminal and a negative electrode terminal and a plurality of sections divided into predetermined dimensions according to the dimensions and shape of the secondary battery are connected in parallel to the positive electrode terminal and the negative electrode terminal. A parallel contact and a parallel wiring provided from the parallel contact are disposed, and the adjacent parallel wiring is connected to each other, and a substrate having an individual circuit pattern formed on a surface thereof, For each of the circuit patterns on the substrate,
A secondary battery system may be provided in which a plurality of the secondary batteries are juxtaposed by abutting the terminals and the contacts to form a battery pack of a parallel power supply.

Furthermore, a secondary battery having four terminals, a positive terminal and a negative terminal for series power supply and a positive terminal and a negative terminal for parallel power supply, in the same housing, and a predetermined size corresponding to the size and shape of the secondary battery In the plurality of divided sections, a serial contact and a parallel contact for serially connecting and parallel connecting the positive electrode terminal and the negative electrode terminal, and a serial wiring and a parallel wiring provided from the respective contacts Is disposed, the adjacent series wiring and the parallel wiring are connected, comprising a substrate on the surface of each circuit pattern formed on the surface, the circuit pattern on the substrate, A secondary battery system may be configured in which a plurality of the secondary batteries are juxtaposed by abutting the terminals and the contacts to form an assembled battery of a series power supply and a parallel power supply.

On the other hand, the feature of the secondary battery according to the present invention lies in a unit battery having a four-terminal structure having two sets of a positive terminal and a negative terminal in the same housing capable of supporting a series power supply and a parallel power supply. . A feature of the secondary battery using system according to the present invention resides in that the secondary battery system according to any one of claims 1 to 5 is incorporated in a housing of the secondary battery using system.

According to the present invention, the secondary battery, the secondary battery system, and the system using the secondary battery can be integrated, and the size and weight can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a secondary battery system according to one embodiment of the present invention. FIG. 2 shows FIG.
FIG. 4 is a diagram showing a circuit pattern of an embodiment for configuring the secondary battery system of FIG. FIG. 3 is a view showing a secondary battery according to one embodiment of the present invention. 1-3 of the present invention
A description will be given of the design procedure shown in FIG.

In a secondary battery using system, a secondary battery, a secondary battery system, and an integrated dedicated design of its peripheral portion
(Integrated design) is performed as follows. First, FIG.
In the procedure shown in (a), the housing 1 as a part of the outer case of the secondary battery use system is selected as a component having a space in which the secondary battery system can be installed. Then, the shape of the substrate 2 on which the secondary battery system is mounted is determined from the dimensions and shape of the housing 1. The board 2 is a mounting body for mounting a plurality of unit batteries 4 as one secondary battery and forming a secondary battery system.

Next, in the procedure shown in FIG.
The size of the unit battery 4 as shown in FIG. The size of each unit battery 4 is designed based on the dimensions and shape of the housing 1. For example, in the case of a case having a complicated shape, the use of a unit battery having a small size does not cause a deviation from the shape of the substrate 2 and a high packing density (high space efficiency) arrangement can be achieved. So it is desirable. Also, the size of the unit battery is determined from the shape of the substrate 2 and is calculated by calculation so that the unit battery 4 can be arranged in a space in which the unit battery 4 is disposed without waste. That is, the size of the unit battery 4 is calculated so that the energy density per unit area of the “assembled battery as the secondary battery system” is maximized.

Further, the thickness of the unit battery 4 is determined from the capacity required by the secondary battery use system. Then, the thickness of the unit battery 4 in which the energy density per unit volume of the assembled battery is maximum is calculated, and when a large deviation occurs between the calculated thickness from the energy density and the calculated thickness from the capacity, For example, it is designed to have a structure in which battery packs as a secondary battery system are stacked and arranged in two layers.

Further, in the procedure shown in FIG.
In order to mount a plurality of unit batteries 4 on the substrate 2, individual circuit patterns 3 are set in a plurality of sections which are neatly divided into predetermined dimensions in accordance with the dimensions and shape of the unit batteries 4.
That is, as shown in FIG. 2, the substrate 2 is provided with two sets of positive and negative terminals (a series positive terminal 9, a series negative terminal 10, a parallel positive terminal 11, a parallel negative terminal 12, ) And a contact (series contact 5, parallel contact 6) for connecting the unit batteries 4 in series or in parallel according to the circuit design of the secondary battery use system. And a plurality of circuit patterns 3 including wirings to be used as a “parallel power supply”.

In other words, the substrate 2 is provided with a plurality of sections which are neatly divided into predetermined dimensions in accordance with the dimensions and shape of the secondary battery, and which are connected in series with each of the positive electrode terminal and each of the negative electrode terminals and for connecting in parallel. The contact points for parallel and the series wiring and the parallel wiring arranged from the respective contacts are arranged, and the individual circuit patterns in which the adjacent serial wirings and the parallel wirings are connected are formed. Formed on the surface. Therefore,
Each unit battery 4 and each circuit pattern 3 are set correspondingly. However, it is not always necessary to have a one-to-one relationship.

As shown in FIG. 2, the battery power supply wiring is connected to a series wiring 18 for connecting the unit batteries 4 in series via the series contacts 5 and to each other via the parallel contacts 6. It comprises a parallel wiring 19 for connecting the unit batteries 4 in parallel, and a signal line 8 for monitoring the voltage of the internal circuit of the unit battery 4, that is, the voltage of each unit battery 4, each of which is shielded. ing. A safety protection circuit provided for preventing overcharge and overdischarge from the signal line 8
(Not shown), voltage information and the like are transmitted. further,
A current collecting circuit (not shown) for collecting the power of the unit batteries 4 connected in series or in parallel is set at the outer peripheral end of the substrate 2 as necessary.

Summarizing the above, when arranging the unit batteries on the substrate, a design method (simulation) such as CAD is used to maximize the energy density per unit area and the energy density per unit volume. The size of the battery is determined, and one section of a circuit pattern that is neatly divided into predetermined dimensions in accordance with the size and shape of the unit battery is determined. Further, if necessary, a secondary battery system having a structure in which unit batteries having a stackable structure are stacked on a substrate in a multilayer manner is intended to improve energy density.

Then, in the procedure shown in FIGS. 1C and 1D, a plurality of unit batteries are brought into contact with a plurality of circuit patterns 3 formed on the substrate 2 so that each terminal comes into contact with each contact. 4 to complete the design of the secondary battery, the secondary battery system and its peripheral parts, that is, the design of the secondary battery use system. With these design procedures, extremely flexible circuit design is possible, and in addition, a compact and lightweight system design with a priority on system design can be achieved.

Further, the configuration according to the present invention and its operation will be additionally described. As described above, in the secondary battery system, a plurality of unit batteries 4 are arranged adjacent to a circuit pattern 3 having serial / parallel wiring as shown in FIG. The circuit pattern 3 formed on the substrate 2 is used to connect the series positive electrode terminal 9, the series negative electrode terminal 10, the parallel positive terminal 11, and the parallel negative terminal 12 of the unit battery 4 as a secondary battery. Two types of contacts are provided, two each for a series contact 5 and a parallel contact 6.
These two types of contacts are designed to be connected in series or in parallel in order to select a series or parallel connection. One is for configuring a series power supply, and the other is for configuring a parallel power supply. .

The combination of the series-parallel power supply is determined by the capacity of the unit battery 4 and the power consumption of the secondary battery use system. That is, the board 2 incorporates a switching unit for selecting a series-parallel power supply so that the series-parallel switching can be performed on the board 2 according to the series-parallel combination. The switch 7 as the switching means is provided on the substrate 2 (on the back side of the surface where the unit battery 4 contacts). For example, the switch 7 may be provided on the unit battery 4 and switched externally.

Any configuration provided on the substrate 2 can correspond to any series-parallel combination.
A series / parallel combination is designed based on the voltage and capacity required by the secondary battery system (and the system using the secondary battery), and thereafter, switching between series and parallel can be selected on the board 2, so that the degree of design freedom is improved. It can be said that it is desirable.

On the other hand, since the circuit pattern 3 has the signal line 8 as a signal detecting means for monitoring the voltage of the unit battery 4 on the substrate 2, for example, when the current is cut off instantaneously during charging. Then, the circuit voltage of the unit battery 4 at that time can be read from the signal line 8. That is, the circuit voltage signal is transmitted to a control computer (not shown) and used.

For example, the control computer can grasp the state of charge of the unit battery 4 from the circuit voltage signal of each unit battery 4 and perform mapping. Further, although the wiring circuit on the circuit pattern 3 becomes complicated, an "abnormal unit battery" is detected by the circuit voltage signal and the control computer, and only the abnormal unit battery is disconnected from the power supply circuit of the series power supply or the parallel power supply. You can also.

Further, a safety protection circuit may be provided in the substrate 2 as protection means for blocking FETs for preventing overcharge or overdischarge. In this case, if one safety protection circuit is provided for each predetermined number of unit batteries 4 (for each battery block) and the circuit voltage signal is collected for each battery block, the signal lines 8 are collected for each block. Therefore, it is possible to reduce the size of the secondary battery system (and the system using the secondary battery).

By the way, the secondary battery shown in this embodiment is
Two sets of positive and negative terminals, each having a series positive electrode terminal 9, a series negative terminal 10, a parallel positive terminal 11, and a parallel negative terminal 12, capable of supporting a series power supply and a parallel power supply are housed in the same manner. It is a unit battery in the body. In other words, in the present embodiment, the “unit battery having a four-terminal structure” having two sets of four terminals, a positive terminal and a negative terminal, in the same housing (the same cell) that can be switched to a series power supply or a parallel power supply. Is adopted. As described above, this is used together with the switch 7 as the switching means to improve the degree of freedom in design, but, of course, there is no switching means, and it is composed of two generally used positive and negative terminals. A combination of the unit battery 4 and the substrate 2 as a secondary battery is also possible.

That is, in this embodiment, the size and shape of the unit battery are determined based on the size and shape of the battery accommodating space of the housing or the like. However, the determined size and shape do not necessarily lead to the manufacture of the dedicated unit battery. Instead, existing general-purpose unit batteries may be used. The response to such a case will be described with reference to FIGS.

FIG. 4 is a diagram showing a circuit pattern of another embodiment according to the present invention. By arranging multiple rechargeable batteries side by side,
FIG. 2 shows an adjacent circuit pattern for forming a battery pack of a series power supply as a secondary battery system. FIG. 5 is a diagram showing a circuit pattern of another embodiment according to the present invention.
FIG. 2 shows an adjacent circuit pattern for configuring a battery pack of a parallel power supply as a secondary battery system.

FIG. 4 shows the adjacent circuit patterns 3a and 3b of the individual circuit patterns 3 for the series power supply.
(Part). Each of the circuit patterns 3a and 3b has signal lines 8a and 8b as signal detecting means for detecting an electric signal of the secondary battery. The signal line 8a is connected to the serial contact 5a, but the signal line 8b is not connected to the serial contact 5b, and the signal line 8b is a wiring for transmitting an electric signal detected by the circuit pattern 3a. That is, this is a case where an electric signal is detected for each of a predetermined number of unit batteries (for each battery block). Although the signal line circuit on the circuit pattern is congested, it is possible to increase the number of unit cells for detecting an electric signal.

FIG. 5 shows a part of adjacent circuit patterns 3c and 3d among the individual circuit patterns 3 for the parallel power supply. The circuit pattern 3c does not have the signal line 8, but the circuit pattern 3d has the signal line 8. In the case of a parallel power supply, such a configuration detects an electric signal for each battery block. Using the circuit pattern 3 as described above, a battery pack of a series power supply or a parallel power supply can be formed, and the use of a general-purpose unit battery including two terminals of a positive terminal and a negative terminal is performed.

The above is summarized as follows. That is, the feature of the present invention is 0.5 (Wh) or more to 50 (kWh).
Heat source, power, control circuit, drive circuit with the following capacity,
In a secondary battery-based system that includes at least one of an LSI, an IC, and a display element or a combination of a plurality of these, the secondary battery and the secondary battery system are integrated into a secondary battery-based system (housing, etc.) ). In addition, the secondary battery use system according to the present invention is capable of appropriately and easily integrating the housing and the secondary battery system (including the secondary battery) even if the housing has a complicated size and shape. There is also.

According to the present invention, by integrating the housing of the secondary battery using system with the secondary battery and the secondary battery system, the housing (or a part of the housing or the inside of the housing) becomes free. Space (battery storage allowable space) can be effectively used, so that the size and weight of the secondary battery use system can be reduced. Note that the capacity range of 0.5 (Wh) or more and 50 (kWh) or less is because there is a high need for effective use of space of a target product as a secondary battery using system in this range. In addition, the above-mentioned housing or a part of the housing or the battery storage allowable space inside the housing is referred to as “housing or the like”.
Called.

Further, the secondary battery system according to the present invention comprises:
Liquid crystal display, multilayer wiring board, PCMCIA card (PC card), voice card, modem, mobile phone, FA
The present invention is applied to at least one of X, a battery IC, an electric vehicle, an elevator, a train, and an emergency power supply, or a combination of a plurality of these. Further, in a secondary battery system in which a plurality of unit batteries are connected and a secondary battery using system using the same, the substrate on which the unit batteries are arranged is:
It has almost the same dimensions and shape as the case of the secondary battery use system and is integrated with the case and the like.

Further, in a secondary battery system to which a plurality of unit batteries are connected and a secondary battery using system using the same, the unit batteries have built-in switching means for switching between series or parallel between the unit batteries. It is installed on a substrate that has been removed. That is, in a secondary battery system in which a plurality of unit batteries are connected on a substrate and a secondary battery using system using the same, the unit batteries can support two types of power sources, a series power source and a parallel power source. And two types of positive and negative terminals, and the substrate can be switched to a series power supply or a parallel power supply by selecting one of the two types.

Further, in a secondary battery system in which a plurality of unit batteries are connected on a substrate and a secondary battery using system using the same, the substrate includes a signal detector for detecting a circuit voltage of the unit battery. It has a signal line as a means, or has a protection means for preventing overcharge or overdischarge by using an electric signal from the signal detection means.

[0037]

FIG. 1 shows a secondary battery, a secondary battery system, and a system using a secondary battery according to the present invention.
3 to FIG. 3, the description will be made from an example of a specific production.

Example 1 In the procedure shown in FIG. 1A, a 5-inch liquid crystal panel is mounted on a back side of a liquid crystal panel, and a 5-inch liquid crystal panel is mounted on a 5-inch liquid crystal panel. Of the liquid crystal panel was manufactured. The housing 1 is a part of an outer case of the secondary battery use system. Then, a substrate 2 having substantially the same size and shape as the housing 1 is manufactured, and a simulation is performed so that the energy density per unit volume is maximized based on the size and shape of the substrate 2. “Unit battery 4 as a secondary battery” The size was determined. Then, the unit battery 4 of the size was manufactured exclusively.

In the procedure shown in FIG. 1B, based on the size of the unit battery 4 obtained by the simulation, the substrate 2 was divided into meshes in an orderly manner, and the circuit pattern 3 was integrally formed at each of the divided portions. . Note that a separate circuit pattern 3 may be fixedly formed on the substrate 2. FIG. 2 is also an enlarged view of the circuit pattern 3. On the surface side on which the circuit pattern 3 is formed (that is, on the surface side of the substrate 2), there are a serial contact 5 and a parallel contact 6, and each of the contacts 5 and 6 has a serial wiring 18 and a parallel wiring 19, respectively. Are connected, and a signal line 8 for measuring a circuit voltage is also provided.

Although not shown, the wirings 18 and 19 of the adjacent circuit patterns 3 are connected in series or in parallel to form a battery pack of a series power supply or a parallel power supply. On the other hand, on the back side of the circuit pattern 3 (that is, on the back side of the substrate 2), a slide switch 7 for selectively opening and closing the contact 5 or 6 is attached.

In the procedure shown in FIG. 1C, the unit battery 4 was placed and fixed on the substrate 2. FIG. 3 is also a structural diagram of “a unit battery 4 as a secondary battery according to one embodiment of the present invention”. In the unit battery 4, a series positive electrode terminal 9 and a series negative electrode are provided at positions corresponding to the serial contacts 5 and the parallel contacts 6 of the circuit pattern 3 on the surface of the unit battery 4 where the unit battery 4 contacts the circuit pattern 3. A terminal 10 and a parallel positive terminal 11 and a parallel negative terminal 12 are provided. Therefore,
The serial contact 5 and the serial positive terminal 9 and the serial negative terminal 1
0 abuts, and the parallel positive electrode terminal 11 and the parallel negative electrode terminal 12 abut on the parallel contact 6, so that each unit battery 4 is fixed to each circuit pattern 3 formed on the substrate 2,
An assembled battery of a series power supply or a parallel power supply is configured. Also,
The unit batteries 4 formed in a stacked structure type are stacked and fixed as necessary.

In the procedure shown in FIG. 1D, a number of unit batteries 4 corresponding to the plurality of circuit patterns 3 are fixedly mounted on the individual circuit patterns 3 formed on the substrate 2 to form a secondary battery system. Was completed. Therefore, it can be said that the secondary battery system according to the embodiment of the present invention includes the substrate 2 having the plurality of circuit patterns 3 and the plurality of unit batteries 4 fixedly mounted on the circuit patterns 3.

It is also possible to print a plurality of circuit patterns 3 directly on the housing 1 without using the substrate 2, but it is possible to install the switch 7, to set the strength and reliability of the secondary battery system, or to use the secondary battery. From the viewpoint of assemblability of the battery use system, it can be said that it is preferable to provide and use the substrate 2 which is separate from the housing 1. The circuit pattern 3 is directly connected to the housing 1
If the switch 7 is formed, it is necessary to set the switch 7 separately, for example, to provide the switch 7 on the unit battery 4 side.

The housing 1 with the secondary battery system manufactured as described above was installed on the back side of a 5-inch liquid crystal panel and integrated to complete an outer case (for example, a lid case) of a secondary battery using system. In the case of the present embodiment, the size of the “liquid crystal display as a secondary battery using system” is 7
It was as small as 7.5 (cm ³ ) and the thickness was as thin as 1 (cm). And the weight was as light as 50 (g). The strength by the destructive test was 35 (kgf / cm ² ).

(Comparative Example 1) In a 5-inch "liquid crystal display" system, five cylindrical battery cells each having a capacity of 7.2 (Wh) and a size of 18650 were used.
A battery pack as a secondary battery system having a capacity of 6 (Wh) was manufactured. The size of the liquid crystal display in this case is 3
It was as large as 10 (cm ³ ) and as thick as 4 (cm). The weight is as heavy as 55 (g). In addition, the portability is poor because the center of gravity is biased toward the battery pack. Note that the general-purpose unit battery refers to a unit battery manufactured in a large amount by a battery-specific manufacturer with versatility.

(Comparative Example 2) A battery pack having a capacity of 21.6 (Wh) using 12 flexible batteries as general-purpose unit batteries having a capacity of 1.8 (Wh) in a 5-inch "liquid crystal display" Was prepared. In this case, the size of the liquid crystal display was as large as 155 (cm ³ ), and the thickness was as large as 2 (cm). In addition, the strength by the destructive test is 5 (kgf / c
m ²⁾ and small, weak.

[0047]

According to the present invention, a secondary battery, a secondary battery system, and a system using a secondary battery can be integrated and exclusively used (integrated), and a liquid crystal display system and a portable device using the liquid crystal display system can be used. Information terminal,
Portable computers, pen computers, systems having the functions of mobile phones, electric vehicles, elevators, trains,
This has the effect of reducing the size and weight of a secondary battery use system such as an emergency power supply.

Also, the secondary battery system according to the present invention
Unit batteries are arranged on a board (including circuit pattern) with dimensions and shape appropriate for the housing and integrated with the housing. In addition, there is an effect that the assemblability of the secondary battery system and the secondary battery use system is simplified.

By effectively utilizing the space formed by the housing as a place where the secondary battery system is incorporated, the system using the secondary battery can be reduced in size and weight. In addition, because the design can take into account the center of gravity and shape of the system used, the portability of the system using secondary batteries,
Comfort is obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a secondary battery system according to one embodiment of the present invention.

FIG. 2 is a diagram showing a circuit pattern of an embodiment for configuring the secondary battery system of FIG.

FIG. 3 is a view showing a secondary battery according to an embodiment of the present invention.

FIG. 4 is a diagram showing a circuit pattern of another embodiment according to the present invention.

FIG. 5 is a diagram showing a circuit pattern of another embodiment according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... housing | casing, 2 ... board | substrate, 3, 3a, 3b, 3c, 3d ... circuit pattern, 4 ... unit battery, 5, 5a, 5b ... series contact, 6 ... parallel contact, 7 ... switch, 8, 8a , 8b ...
Signal line, 9 ... positive terminal for series, 10 ... negative terminal for series,
11: Parallel positive terminal, 12: Parallel negative terminal, 18 ...
Series wiring, 19 ... Parallel wiring

Continued on the front page (72) Inventor Ren Muranaka 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Within Hitachi Research Laboratory, Hitachi, Ltd.

Claims (7)

[Claims] 1. A secondary battery having a positive electrode terminal and a negative electrode terminal, and a plurality of sections divided into predetermined dimensions according to the dimensions and shape of the secondary battery for connecting the positive electrode terminal and the negative electrode terminal in series. A series contact and a series wiring provided from the series contact are arranged, and the series wiring adjacent to each other are connected, and a substrate having an individual circuit pattern formed on a surface thereof, A secondary battery system comprising: a plurality of secondary batteries arranged in parallel by contacting the terminals and the contacts with the circuit patterns on the substrate to form a series power supply battery pack. . 2. A secondary battery having a positive electrode terminal and a negative electrode terminal, and a plurality of sections divided into predetermined dimensions according to the size and shape of the secondary battery for connecting the positive electrode terminal and the negative electrode terminal in parallel. A parallel contact and a parallel wiring provided from the parallel contact are disposed, and the adjacent parallel wiring is connected to each other, and a substrate having an individual circuit pattern formed on a surface thereof, A secondary battery system comprising: a plurality of the secondary batteries arranged in parallel by contacting the respective terminals and the respective contacts with the respective circuit patterns on the substrate to constitute a battery pack of a parallel power supply. . 3. A secondary battery having four terminals, a positive terminal and a negative terminal for a series power supply and a positive terminal and a negative terminal for a parallel power supply, in the same housing, and a predetermined size according to the size and shape of the secondary battery. In the plurality of divided sections, a serial contact and a parallel contact for serially connecting and parallel connecting the positive electrode terminal and the negative electrode terminal, and a serial wiring and a parallel wiring provided from the respective contacts And a substrate on which the individual circuit patterns are formed on the surface, wherein the adjacent serial wirings and the parallel wirings are connected to each other. A secondary battery system, wherein a plurality of the secondary batteries are juxtaposed by abutting the terminals and the contacts to form an assembled battery of a series power supply and a parallel power supply. 4. The secondary battery according to claim 1, wherein at least one of the circuit patterns is connected via the series contact or the parallel contact. And a signal detecting means for detecting the electric signal of the secondary battery. 5. The parallel power supply according to claim 3, wherein the substrate is a series power supply in which the series power supply positive and negative terminals and the series contact are connected in series or the parallel power supply positive and negative terminals are connected to the parallel power supply. And a switching means for selecting a parallel power supply in which the power contacts are connected in parallel. 6. A power supply having four terminals, a positive terminal and a negative terminal, capable of supporting a series power supply and a parallel power supply in the same housing.
The secondary battery is a "unit battery having a terminal structure." 7. A secondary battery using system, wherein the secondary battery system according to any one of claims 1 to 5 is incorporated in a housing or the like of the secondary battery using system.